The choice of settings for hardware, firmware, software or other components of a database system.

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8 views

how to force postgresql to filll work_mem?

i'm currently investigating a situation where my PostgreSQL 9.3 instance was killed by the Linux OOM Killer and went to recovery mode. The machine is EC2 Server with 16 GB of RAM and has rather few ...
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2answers
219 views

Best configuration for MySQL? InnoDB and MyISAM

I read that InnoDB is supposed to be better at writing into MySQL than MyISAM, however, I'm trying it out, by running 3000 MySQL queries(Inserting rows, 8 Columns + id)... but results haven't turned ...
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2answers
3k views

Mariadb on Centos 7 not changing max connections based on my.cnf

The following configuration in my.cnf is not being followed. Max_connections go back to 151. please help as i have 16gb of dedicated ram that i would like to use properly. [mysqld] datadir=/var/...
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1answer
1k views

Oracle Enterprise Manager Installation

First I install oracle 11g database with this configuration Step 2 of 9 I selected Create and configure a database Step 3 of 9 I selected Desktop Class Step 4 of 8 Global database name: Blitz ...
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1answer
276 views

Non-Replicating commands from (master) Mysql 5.5.40 to (slave) MariaDB 10.0.19

CRUD replicates just fine. But we noticed that DB structure altering commands such as ALTER TABLE and/or adding/updating columns to a table and even creating new ones do not replicate to the slave at ...
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1answer
203 views

PostgreSQL force sslmode=verify-full

I have created my CA, Server and Clients certificates and keys. I have tried connections using sslmode flags with psql. I have edited the pg_hba.conf file to force SSL using hostssl only. Now I would ...
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0answers
25 views

MAXDOP Recommendations - Is my understanding correct? [duplicate]

I have a VM SQL 2014 Server with the following CPU setup. If I follow MS recommendations for MAXDOP settings (https://support.microsoft.com/en-us/kb/2806535) I believe that MAXDOP should be 2 as the ...
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1answer
275 views

can't install citext extension: could not access file “$libdir/citext”: No such file or directory

I'm trying to get citext available as a type in a specific database. The Postgres database server is 9.4. I see it on the server in the pg_catalog's pg_available_extensions view. From the psql ...
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1answer
225 views

Mysql high cpu usage - cpanel

After an update from whm, I see a high CPU usage from MySQL (5.6). my.cfg: [mysqld] slow_query_log=1 slow_query_log_file="/var/lib/mysql/slow-query.log" long_query_time=1 skip_name_resolve ...
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1answer
313 views

PostgreSQL on Windows fails to start - 'could not create shared memory segment'

PostgreSQL 9.4 & 9.5 (beta) on my Windows 7 laptop fails to start. In the Windows event log I see the following error: 2015-11-10 13:53:49 IST FATAL: could not create shared memory segment "...
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2answers
629 views

my.ini configuration for a huge server

I have developed a web based app in PHP MySQL and Flash Builder. It was running fine until a few days ago when the client began to connect a lot of users. Then the app started to freeze and sent ...
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1answer
797 views

MySQL: SELECT GET_LOCK slow/timeout

I am using "Zebra Session" as a replacement for PHP's built-in session management. Zebra Session stores sessions in a MySQL database, and uses "session locking" in order to ensure that data is ...
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2answers
47 views

Determine ANSI_DEFAULTS setting ON or OFF?

How can I determine if ANSI_DEFAULTS is enabled or not on my server. My server is using IMPLICIT transactions and one way from which it can affect it based on setting of ANSI_DEFAULTS. How can I ...
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0answers
23 views

MySQL - What does ODBC's BIG_PACKETS option do?

I have seen the line OPTION=10 in some connection entries in ODBC.ini files, and found that it corresponds to the options 2 and 8. Those are defined in the documentation (PDF) as the following (...
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3answers
289 views

Virtualize SQL High CPU

This is a client environment which needs significant overhaul so all I am trying to do is slow the bleeding. Situation CPU is getting crushed, often 80% or higher utilization VMWARE 5.5, Windows ...
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1answer
41 views

SQL Server 2014 login issue

I have a login issue here. I created a new user login in SQL Server 2014. I tried to connect to my database using this new login and the below error pops up Message Error: 18456, Severity: 14, ...
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3answers
139 views

Is there a setting in MySQL that will allow you to see the columns of a table on a query, even if the table is empty?

When I am writing code to go with a certain MySQL query, I like to do a basic select statement to see the columns, and to perhaps see what data is available as a sample. Sometimes, the table I would ...
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2answers
30 views

Always On Stand Alones

Can I add a Stand Alone instance to a Windows Failover Cluster for Always On set up? I need to have one secondary synchronous replica with automatic failover.
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2answers
2k views

Secondary and Arbiter stuck in Startup

I'm using MongoDB version 3.0.0. I'm trying to setup mongodb replication on our machine. Replication was initially setup but due to some changes on the VM the entire thing crashed. When I tried to set ...
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0answers
45 views

Export query execution settings from Management Studio

Actually, we're migrating from SQL Server 2000 to SQL Server 2014 (approximately 300 servers. With SQL Server Enterprise Manager 2000 and SQL Query Analyzer, we can export some settings (Connections ...
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0answers
20 views

What are the best settings of InnoDB for FULLTEXT queries?

This question has been asked before, but I was unable to find the right answer for my situation. We have a local server with Quad core and 32GB RAM dedicated for a single InnoDB database, which ...
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0answers
68 views

MySQL is using swap memory while I have plenty of free RAM

I have a 6 GB buffer pool size for my database; however, mysqld process is moving to swap while there is plenty of RAM available. I think pool size and pages along with pool of reads and pool of read ...
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1answer
21 views

Is there any database system that allows to have different schemas for different users but the same content for all users?

In my fantasies, it looks something like this: User 1: SHOW TABLES; +-----------------------+ | Tables_in_my_database | +-----------------------+ | table_1 | | table_2 | +...
4
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1answer
3k views

MySQL InnoDB page_cleaner settings might not be optimal

Seeing this note in mysqld.log: [Note] InnoDB: page_cleaner: 1000ms intended loop took 15888ms. The settings might not be optimal. (flushed=200 and evicted=0, during the time.) There seems to be ...
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2answers
195 views

Always On Availability Group, Always redirect user to read only instance

We have an Always On availability group with a primary and a read-enabled secondary. We have a user for the implementation team who uses the database to check the correctness of the data that they are ...
3
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1answer
29 views

Error When Trying to Run MDW Data Collector

I have SQL Server Management Data Warehouse (MDW) set up across multiple instances, all in the same way with the same accounts and permissions. On one server I get an error when trying to run the ...
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1answer
129 views

SQL Server configuring both UCP and MDW on a single server

I'm trying to configure both UCP and MDW on a SQL Server. I have already setup UCP and it created [sysutility_mdw] database. Now when i try to setup MDW it is trying to use sysutility_mdw database ...
3
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1answer
67 views

Can SSMS Object Explorer Details configurations be exported?

A number of employees make use of SQL Server Management Studio (SSMS). I have a configuration file for all new users for Environment (etc) configurations. I want to deliver a uniform view for each ...
6
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1answer
580 views

SQL Server instance using only a few hundred MB. Well below the minimum server memory setting

I've got two SQL Server 2012 instances running on a server with 32GB of RAM and running little else. One instance is behaving normally. Its working set memory is running close to its commit which is ...
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0answers
18 views

Download the replication snapshot file using FTPS

I have two databases for two companies. Company A's database contains domain data. The other company is pulling the data using snapshot replication. We have used FTP to communicate: Created FTP ...
0
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1answer
19 views

Having two data folder in my postgresql setup- Postgresql

I am using centos 6 and installed Postgresql_9.4 using the following commands yum install postgresql postgresql-contrib postgresql-client pgadmin3 yum install postgresql-server After that i ...
0
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1answer
26 views

What is the significance of phpMyAdmin's configuration storage and what should I know about it?

After initializing phpMyAdmin on my server, I created a test database in the GUI platform. I realized that I had then received a notification in the phpMyAdmin browser that I needed to set up an ...
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3answers
25k views

Moving SQL Server to different domain

What are best practices/important steps when the Windows Server machine hosting SQL Server 2008 R2 is moved to another domain? What steps definitely/might need to be done for SQL Server before and ...
1
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1answer
50 views

Can mirror and witness have same port number? [closed]

When configuring database mirroring, the mirror and the witness have generated the same port number. When I hit next, it errors out with: End points for instances for the same server must use ...
4
votes
1answer
891 views

Moving DB Log destination?

I currently have SQL DB and Log files going to the same drive. I would like to move the Log files to their own drive. Is there an easy way to achieve this and will it require downtime/reboot of the ...
1
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1answer
31 views

no free memory but low total memory

I have SQL Server 2012 SP2 that has a max memory of 25.4GB but SQL Server is only using 15GB. When I check free memory with the PerfMon SQLServer:Memory Manger Free Memory (KB) counter only 40MB is ...
0
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1answer
29 views

Enabling IPAII protocol disable remote conections. Why?

I have some servers with IPAII protocol enabled with a certain port: I'm using 1433 because a long story. but its working. We can use the default port 1433 AND IPAII ( for PHP developers ) with ...
5
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7answers
11k views

MongoDB doesn't start after changing the data directory

I have installed a mongodb instance using yum.. Now everything works fine. I started the service using service mongod start. It works well. Then I changed the data directory and log path in the ...
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2answers
58 views

SQL Server engine in one place with database files on NAS

My office uses accountant programs which run on SQL Server 2008 R2. The SQL Server engine must be installed on one of the laptops (called "server") and the other laptops (called "clients") connect to ...
5
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1answer
158 views

how to ignore the SSMS (sql server management studio) sql server ansi settings?

The options in Management Studio On Management studio Tools->Options->Query Execution->SQL Server there are options that are set and these prevail over the same options that are set on database level....
0
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1answer
39 views

Update my.cnf without restarting MySQL

I want to update my my.cnf without restarting mysql, is it possible? In fact I just want to set lower_case_table_names = 1, but I do not have the permission to restart MySQL.
4
votes
1answer
106 views

Why is a max degree of parallelism 1 recommended and used for Sharepoint in SQL Server?

I am new to Sharepoint, but I used to work with SQL Server a lot. I realized that Sharepoint changes some of the SQL Server settings to non default values. One is the max degree of parallelism, why ...
3
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3answers
3k views

Best practices for configuring the Drive/Filegroup setup for Microsoft SQL 2008

I am a software developer for a small company. I wish we had a dba but that is not on the cards at this point. I was working on migrating our 75GB SQL Server 2000 database to SQL Server 2008 R2. The ...
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2answers
291 views

Query cache size in SQL Server 2014

Is there a way to define/set/increase the query cache size in SQL Server 2014 similar to what MySQL has http://dev.mysql.com/doc/refman/5.0/en/query-cache-configuration.html
1
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0answers
117 views

Basic PostgreSQL 9.x Performance Optimization Strategies for Reads/Analysis

Postgres comes, out of the box, configured as a general purpose database for both OLTP and OLAP types of loads. My need is to do use Postgres, in this case, purely as an OLAP running aggregate queries ...
0
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0answers
30 views

Troubleshooting Case Sensitive linked server identification

Good afternoon, A few of our 2008 SQL servers were recently migrated to fresh 2014 installs, and I'm having trouble identifying where a breakdown is occurring in the linked server setup because of ...
0
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1answer
52 views

Possible hidden limit reached in MySQL instance

I'm developing a node.js/sails.js application and host my MySQL database on a Google compute engine instance. During load testing it hits some limit at 1300 RPS. The instances hosting the application ...
8
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3answers
142 views

Change the system wide default for maxrecursion

How do I change the system-wide default value of MAXRECURSION? By default it is 100, but I need to increase it to something like 1000. I am unable to use query hints since I'm using a program that ...
1
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1answer
210 views

MongoDB allocates chunks only to Primary when sharding is enabled

I'm setting up an instance of MongoDB with 3 shards. I've setup everything seemingly correctly by following the docs and comparing my config with that of a friend who has a similar setup but with a ...
1
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2answers
443 views

TempDB default number of files in SQL Server 2016

Noticed the docs for SQL Server 2016 CTP2 state "by default, setup adds as many tempdb files as the CPU count or 8, whichever is lower." https://msdn.microsoft.com/en-us/library/bb510411(v=sql.130)....